<template>
    <div>
        <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 开发-->
    <el-card class="box-card">
    <!--2. 为 ECharts 准备一个定义了宽高的 DOM -->
    <div id="main" style="width: 700px;height:500px;"></div>

    </el-card>
    </div>
</template>


<script >
//1.导入echarts
import * as echarts from "echarts"
import _ from 'lodash'
export default {
    name: 'report',
    data() {
      return {
        //需要与折现图合并的数据项
        options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
        }
    },
    created() { },
    //此时页面上的元素已经渲染完毕了
  async  mounted() {
    //3. 基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'))

    //4.准备数据与配置项
    // var option = {
    //     title: {
    //       text: 'ECharts 入门示例'
    //     },
    //     tooltip: {},
    //     legend: {
    //       data: ['销量']
    //     },
    //     xAxis: {
    //       data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
    //     },
    //     yAxis: {},
    //     series: [
    //       {
    //         name: '销量',
    //         type: 'bar',
    //         data: [5, 20, 36, 10, 10, 20]
    //       }
    //     ]
    //     }
    const { data: res } = await this.$http.get(`reports/type/1`)
    if (res.meta.status !== 200) {
        return this.$message.error('获取折线图数据失败')
    }

    //合并数据项
   const result= _.merge(res.data,this.options)
      //5.展示图表
      // myChart.setOption(option)
      myChart.setOption(result)
      
    },
    methods:{},
}
</script>

<style lang="less" scoped>

</style>